Help : Draw with cycle~ and sonogram

Hi !
For some reason, i want to draw lines using cycle~ and white noise (or a better sine signal) into a spectroscope in sonogram mode.
It kind of work, but is there any way to make the spectro ‘less sensitive’, so it would draw real lines. The result is kind of blurry, as you can see in this patch. I’m thinking of cheating and using a lcd instead, but i’d really like that the sound would actually draw the lines.

Thank you !

louis

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